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  • 1
    Electronic Resource
    Electronic Resource
    REGULATION OF RESPIRATION AND BLOOD GASES (1963)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 109 (1963), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1963.tb13509.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Respiration (1966)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physiology 28 (1966), S. 177-200 
    Details
    ISSN: 0066-4278
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ph.28.030166.001141
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  • 3
    Electronic Resource
    Electronic Resource
    The pressure surrounding the lungs
    Amsterdam : Elsevier
    Respiration Physiology 5 (1968), S. 130-144 
    Details
    ISSN: 0034-5687
    Keywords: Breathing mechanics ; Esophageal pressure ; Pleural pressure ; Position Lung ; Thoracic pressure
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0034-5687(68)90082-0
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  • 4
    Electronic Resource
    Electronic Resource
    Cardiovascular changes in conscious dogs during spontaneous deep breaths (1975)
    Springer
    Pflügers Archiv 355 (1975), S. 205-215 
    Details
    ISSN: 1432-2013
    Keywords: Pulmonary Artery and Aortic Transmural Pressures ; Afterload ; Left and Right Ventricular Filling Pressures ; Stroke Volume ; Coronary Flow ; Autonomic Nervous Function
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Cardiovascular functions were evaluated beat by beat during 29 spontaneous deep breaths in three conscious dogs. When pleural pressure was significantly lower than during quiet breathing, stroke volume was reduced, heart rate elevated, as well as transmural pressure in the pulmonary artery $$\left( {\bar P_{PA} - P_{pl} } \right)$$ and in the thoracic aorta $$\left( {\bar P_{AO} - P_{pl} } \right)$$ ; the left ventricular filling pressure (LVEDP—P pl ) did not decrease. The authors suggest that these findings are not consistent with the classical hypothesis which explains the decrease in left ventricular output primarily by a reduction in the venous return to the left heart. The results indicate that the decrease in pleural pressure is responsible for an increase in the afterload on the left heart and suggest that this is the predominant factor in the reduction of the stroke volume without decrease in left ventricular filling pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00583684
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  • 5
    Electronic Resource
    Electronic Resource
    Gas transport during high-frequency ventilation: Theoretical model and experimental validation (1984)
    Springer
    Annals of biomedical engineering 12 (1984), S. 407-419 
    Details
    ISSN: 1573-9686
    Keywords: Effective diffusivity ; Gamma distribution ; Dead space ; Enhanced diffusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract We present a theoretical model of gas transport through the dead space during high-frequency ventilation (HFV) with volumes less than dead space volume. The analysis is based on the axial distribution of transit times of gas moving through the dead space. The model predicts that for tidal volumes (V) much less than dead space (Vd), gas exchange will be proportional to the product of frequency (f) and V2. If gas transport is analyzed in terms of Fick's law, then the effective diffusion coefficient (Deff) can be shown to be equal to fV2 times a constant, whose value equals the square of the coefficient of dispersion of axial transit times through the dead space $$(\sigma _t /\bar t)^2 $$ . Experimental results in straight tubes fit the predictions of this model quite well. A $$(\sigma _t /\bar t)$$ through the entire dead space of about 30% is more than sufficient to account for gas exchange during HFV in physical models or in intact animals. An axial dispersion of this magnitude can be measured directly from a typical Fowler dead space determination in healthy subjects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02407783
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